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题名: Green synthesis and characterization of anisotropic uniform single-crystal alpha-MoO3 nanostructures
作者: Fang, Liang;  Shu, Yuying;  Wang, Aiqin;  Zhang, Tao
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2007-02-15
DOI: 10.1021/jp065791r
卷: 111, 期:6, 页:2401-2408
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: Anisotropic uniform single-crystal nanostructures of alpha-MoO3 have been synthesized successfully via a novel green and facile approach, i.e., decomposition and condensation of peroxomolybdic acid under hydrothermal conditions. The structure and morphology of the products were characterized by means of X-ray diffraction, transmission electron microscopy, selected area electron diffraction, high-resolution transmission electron microscopy, scanning electron microscopy, thermogravimetric/differential thermal analysis, temperature programmed decomposition-mass spectrometry, and Fourier transform infrared spectroscopy. It has been found that the formation of alpha-MoO3 proceeds at hydrothermal temperatures higher than 83.5 degrees C and that of MoO2.67-(O-2)(0.33)(.)0.75H(2)O is at 81.5 degrees C with the 0.9 mol/L molybdenum solution. The as-synthesized uniform nanostructures grow preferentially along [001], and the dimensions are 200-330 nm in width, 60-90 nm in thickness, and up to 10 mu m in length during time spans from 20 to 45 h at 170 degrees C. The structure and morphology of alpha-MoO3 show a weak dependence on the molybdenum concentrations of 0.2-0.9 mol/L, while the growth in the b-axis direction can be enhanced distinctly and specifically by the addition of nitric acid to the initial peroxomolybdic acid solution. The critical point in temperature (81.5-83.5 degrees C) to form hydrate and oxide is discussed, and one possible mechanism is proposed.
关键词[WOS]: FIELD-EMISSION PROPERTIES ;  MOLYBDENUM TRIOXIDE ;  CARBON NANOTUBES ;  MOO3 NANOBELTS ;  INORGANIC NANOTUBES ;  THERMAL-BEHAVIOR ;  THIN-FILMS ;  OXIDE ;  NANORODS ;  OXIDATION
语种: 英语
WOS记录号: WOS:000245005700008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140557
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Fang, Liang,Shu, Yuying,Wang, Aiqin,et al. Green synthesis and characterization of anisotropic uniform single-crystal alpha-MoO3 nanostructures[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2007,111(6):2401-2408.
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